While a regular Nintendo was my first gaming system, I'd say Super Nintendo mostly for biased reasons. But man did that have a lot of great games and I got a lot of mileage out of it, too. I went from that to a Playstation which felt like an enormous leap forward in everything, but a lot of my best gaming memories still lie with my Super Nintendo days.

Super Nintendo is definitely top 3 for me. Much like you I have a lot of great memories with that console. Zelda and Mario games especially with a couple others sprinkled in like Duck Hunter with the gun LOL.